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3 Sheets-Sheet l.

INVENTOR Patented Mar. 19, 1889.

(No Model.)

4J.J.1\/[0OO1VIISH. STOP MOTION FOR- LOOMS.. NQ. 399,917-,

3 Sheets-Sheet 2.

(No Model.)

J. J. MGGOMISH.

STOP MoTIoN FOR LooMs.

No. 399,917. Patented Mar. 19, 1889..

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(No Model.) 34 Sheets- Sheet 3.

J. MOCOMISH STOP MOTION POR LOOMS.

NO. 399,917. lPatented Mar. 19, 1889.l

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INVENTORZ UNITED STATESA PATENT OFFICE.

JOHN J. MCOOMISH, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR OF ONE- HALF TO JOHN J. SI-IANAI-IAN, OF SAME PLACE.

STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 399,917, dated March 19, 1889.

Application filed November 8, 1887.

.To all whom it may concern.'

Be it known that I, JOHN J. MCCOMISH, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Stop-Motions for Looms, of which the following is a full, clear, and exact description, reference being had' to the accompanying` drawings, forming part of this speciiication.

This invention relates to what is known as a stop-motion mechanism, which is a selfacting apparatus for instantly stopping a loom when the loom is not in proper operative condition.

. The objects of my invention are to provide a stop-motion which will at once arrest the motion of the loom when either the shuttle pockets or boxes atthe respective ends of the race each contains a shuttle, or when neither of such boxes contains a shuttle. Since both of the aforesaid conditions are defective and are productive of smashes and other accidents, it is necessary that the loom be at once stopped under such conditions.

To the aforesaid purposes the gist of my invention consists in providing two independently-acting' detector-fingers, one for each of the respective drop-boxes, which may act independently or together upon mechanism connected with the stop-motion rod, which operates the shipper mechanism u nder either of the aforesaid defective conditions of the loom.

My invention further consists in the certain novel and peculiar construction and arrangement of the several parts of the mechanism, all as hereinafter fully described and claimed.

In order that my invention may be 'fully understood, I have illustrated in the accompanying drawings, and will proceed to describe, the best form thereof so far devised by me, with the knowledge that such form may be variously modified without, however, making a substantial departure from the spirit of my invention.

In the accompanying drawings, Figure l is a top plan view of sufficient parts of an ordinary drop-box loom to illustrate the use of my improvements, which are shown embodied Serial No. 254.618. (No model.)

therein, the loom-arch being in section. Fig. 2 is a detailed view of a part of the loom shown in Fig. l. Fig. 3 is a diagrammatic plan view showing the positions of the connecting-lever relatively to the lay, which is shown in part. Fig. 4 is a front view, partly in section, of a portion of the loom shown in Fig. l, and having my improvements attached. Fig. 5 is an end view of a portion of the loom with part of my attached mechanism which actuates the shipper mechanism, and Fig. G is a sectional view taken on line X X in Fig. 5. Fig. 7 is an enlarged sectional view taken on line y y in Fig. l. Fig. 8 is a detailed view of the lay and the rocker pivoted thereto, as shown in Fig. 7.

In the said drawings like letters of reference designate corresponding parts throughout.

Referring to the drawings, the letterA designates the framing of an ordinary drop-box loom, of which B is the warp-beam, C the breast-beam, and D is the lay, which is provided at the respective ends with the vertically-shiftable drop-boxes E for the shuttles F. The drop-boxes E are furnished with the' swells or binders G, having each a spring, G', acting thereon. The purpose and operation of these swells G are well known; and my invention essentially consists in utilizing the swells to det-ect the defect in the position of the shutfles and introducing detector devices or fingers, as H and Iil, to co-operate one with each of the set of swells of the respective dropboxes, so that such detector-lingers are independently movable, and may act separately or together upon the stopping mechanism of the loom.

At the ends of the lay, and on the forward face thereof, are mounted in bearings I3, so as to turn, the detector rock-shafts I and I2, upon the outer ends of which are made fast the detector-fingers II and H', respectively, so that the presence of a shuttle in the box or pocket under the ends of the lingers will cause the same to be thrown outward from the box, while the absence of the shuttles will allow the lingers to incline in toward the boxes. To the inner ends of the detector-shafts are secured the depending fixed arms M and M2,

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vrocks toward the warp-beam.

respectively, which are alike slotted at M at the lower end, and in these slots M rest the respective cylindrical ends of the connectinglever N, which is formed with a central eye to receive the j ournal-stud N', cast on the end of the L-shaped rocker O, which is swiveled at the upper end to the bracket N2, fixed upon the lay.

Atthe angle of the L-shaped rocker O is a perforation, N2, by means of which is hinged thereto the link O2, which at its other end is pivoted to thefend of the bar'P, rigidly attached to the turnable stop-motion rod P, which is mounted to turn in the bearings P2, secured to the under side ,of the lay. The stop-rod P is provided with the stop finger or dagger J, having the retracting-spring L for holding it in high position, and the end of this finger is formed with the lateral hooks J', which are designed to hook and lock with the suitably-forked upper end, Q, of the vibrating arm R, which vibrates on the pin R2, and has its inward throw limited by the stop S'. The hook-ed extension R of the vibrating arm R is designed to engage with the fixed turn-bar R2 on the shipper-shaft L2, so as to draw the bar inwardly as the vibrating arm The shippershaft L2 is mounted to turn in the framing, and at one end is provided with the shipperlever L3, connected with the belt-shipper rod L4 by means of the link L5, so that upon the inward movement of the vibrating arm R the belt-shipping rod L4 may be operated to ship the driving-belt (shown in Fig. l) and stop the loom. The shipper-shaft L2 is also operated to shift the belt when the stop-finger J is in the high position shown in full lines in Fig. l by means of the finger striking against the push-piece K, which is pivoted to the breast-beam and engages with the end of the shipper-arm L', fast upon the shipper-shaft L2, so that when the stop-finger pushes upon one end of the push-piece the other end thereof will move inward and force the shipper-arm inward, so as to turn the shipper-shaft L2 and stop the motion of the loom. The outward throw of the push-piece K is limited by the stop S.

To obviate the wear and tear on the swelliingers G and the detector-iingers H and H', and to prevent the boxes from sticking, I provide the cam-arms T on each detector-shaft l' and l2, and these are arranged to engage cams T', fixed to the breast-beam C, so as to slightly depress the cam-arms at the end of the stroke, and thus throw the detector-fin gers off their respective swells, whereby ihe pressure may be relieved at such time.

The operation of my improved stop-motion is as follows: Vhen the loom is running, if the shuttle about to be thrown has an empty pocket to receive it at the end of its Hight, the swell adjacent to such shuttle will press the detector-finger engaging the same outward, which will accordingly move the corresponding end of the connecting-leverN intoward the lay, while the empty pocket about to receive such shuttle will obviously cause the co-operating detector-finger to lie in toward the box, and will accordingly throw the corresponding end of the connecting-lever N out from the lay. This is the proper ruiming condition of the loom, and under such condition the connecting-lever N will assume the inclined. dotted-line position shown in the diagram in Fig. 3, or in the reverse inclined position, in consequence of which inclined position the stop-linger will be maintained in the dotted-line position shown in Fig. 7, midway between the high and low positions, and will thereby clear both the push-piece K and the head of the vibrating arm R, and of course will not stop the running of the loom. Under the defective condition of two shuttles coming in position to be thrown through the shed, both detector-iingers will be alike deiiected from the lay, and accordingly the connectinglever N will be moved to its inward position parallel with the lay, as shown in dotted lines in Fig. 3, and this will cause the stop-iinger to be lowered to the lowest position, (shown in broken lines in Fig. 7,) so as to engage and latch with the vibrating arm R, which will thereupon be moved inward by the lay as it moves away from the breast-beam, thereby turning the shipper-shaft L2 and stopping the loom, as hereinbefore described. Under the defective condition of the failure of the throwing of a shuttle completely through the shed and into the opposite box bot-h detector-iinger's H and H will accordingly be inclined in toward the boxes, which, as before explained, will move the conn ecting-lever N into the fullline position shown in Fig. 3, and accordingly elevate the stop-finger J to the high position shown in Fig. 7, thereby operating the pushpiece K to turn the shipper-shaft L2 and stop the loom.

Having thus described my invention, I claim as newand desire to secure byLetters Patentl. The combination, as hereinbefore set forth, wit-h the lay of a loom and the dropboxes at the respective ends thereof provided with swells, of the independently-movable detector-iin gers appropriate to en gage the swells thereof and mounted on independent rocking shafts, the inner ends of which rocking-shafts are provided with arms, a lever mounted on the rocker and connecting the arms of the two independent rock-shafts, the rocker, the stopmotion rod, and devices connecting said rocker with said rod,whereby the l oom maybe stopped when the detector-lingers assume certain pre-- determined positions, substantially as and for the purpose herein described.

2. The combination, with the lay of a loom, the drop-boxes provided with swells, the independently-movable detector-iingers, the detector-shafts for the iin gers, the arms attached to the detector-shafts, the rocker, the connecting-lever mounted on said rocker and oper ated by the said arms, and the stop-motion rod provided with the stop-'finger and con- IOO IIO

nected to the said rocker by the link, of the push-piece or vibrating arm constructed to operate a shipping device, substantially as herein described.

The combination, as hereinbefore set forth, with the lay and the drop-boxes there for provided with the swell-fingers, of the iudependently-movable detector-shafts, each provided `with a detector-finger for engaging the swells of the respective drop-boxes, a stopmotion rod and the rocker connected therewith and operating the rod, the connectinglever swiveled to the rocker, and the arm rigidly mounted on each detector -shaft and loosely connected with the respective ends of the connecting lever, substantially as described.

et. The combination, as hereinbefore set forth, with the lay D, provided with the dropboXes E, having the swells G, of the independently-movable detector-iingers ll and H', the shafts I and l2, the arms M' and M2, the connecting-lever N, the rocker O, and the stopmotion rod P, connected therewith and provided with the stop-finger J, the push-piece K, vibrating arm R, and the devices operated thereby, whereby the loom may be stopped when the detector-fingers and stop-finger are similarly deflected, substantially as herein shown and described.

5. The combination, as hereinbefore set forth, with the lay D, having the drop-boxes E, provided with the swells G, ol the independently-movable detector-lingers ll and H', engaging the sets of swells of the respective dropboxes, the rocking detector-shafts I' and l2, upon which the said respective detector-[ingers are mounted, the stop-motion rod P, and the pivoted rocker O, connected therewith and actuating the same, the connecting-lever N, swi veled to the rocker O, and the arms M' and M2, intermediate the respective detectorshafts I and I2 and the ends of the connectinglever N, substantially as and for the purpose herein described.

(5. The combination, as hereinbefore set forth, with the lay, the drop -boxes therefor, and the swells, of the independently-operating detector-shafts l' and l2, provided with the detector-fingers H and H', respectively, and having the arms M' and M2 mounted thereon,

respectively, the stop-rod P, the pivoted rocker O, and the link O2 and bar P', intermediate the stop-rod and the rocker, and the connecting-lever N, swiveled to the rocker and engaging with its ends the said arms h and M2, respectively, substantially as and for the purpose herein described.

7. The combination, as hereinbefore set forth, with the independently-movable detector-shafts I' and 12, provided with the detector-iingers H and H' and the arms Ml' and M2, respectively, of the stop-rod provided With the hooked stop-iinger J, the pivoted rocker O, and the link O2 and bar P', intermediate the said rocker and stop-rod, the connecting-lever N, swiveled on rocker O and engaging With the ends the said respective arms h and M2, the shipper-shaft L2, provided with the turnbar R2 and the shipper-arm L', the pivoted push-piece K, for engaging the said shipperarm, and the vibrating arm R, provided with the hooked head Q and having the hooked extension R', for engaging the turn-bar R2, substantially as and for the purpose herein described.

8. The combination, as hereinbefore set forth, with the independently-movable` detector-shafts I' and I2, provided with the detectoriingers H and H' and the fixed arms M' and M2, respectively, of the stop-rod P, provided with the hooked stop-finger J, the pivoted rocker O, and the link 02 and bar P', intermediate the rod P 'and rocker O, the connectinglever N, swiveled on the rocker() and engaging the arms M' and M2, respectively, the shippershaft L2, provided With the turn-bar R2, and the vibrating arm R, having the hooked head and provided with the hooked extension R', for engaging the bar R2, substantially as and for the purpose herein described.`

f). The combination, as hereinbefore set forth, with the independently-movable detector-shafts l.' and I2, provided with the detectorfingers H and H' and the fixed arms M' and M2,

respectively, of the stop-rod P, provided with the stop-inger J, the pivoted rocker O, and the link O2 and bar P', intermediate the rod P and rocker O, the connect-ing-lever N, swiveled to the rocker O, the shipper-shaft L2, provided With the shipper-arm L', and the pivoted push-piece K, engaged by the finger J, substantially as and for the purpose herein described.

J N O. J. McCOMISI-I. 'itnesses:

J. H. MCCAFFRY, J osEPH A. MILLER, Jr,

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